Question about Black & Decker 19" Electric Lawnhog Mulching Mower with Rear Bag

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Black & Decker Lawn Hog 19" Mulcing Mower MM875 won't start

5 years old, no problems until today. Not an especially hot day or particularly tall or wet grass. Have seen other problems on this site that reference the switch or a bridge rectifier, but how to diagnose and actually repair or replace either is not clear.

(Have checked the power outlet, extension cord, etc -- problem is definitely in the mower.)

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The rectifier is a flat plate with 4 posts that attach the electric wiring inside. You will need a flathead screwdriver to remove the four screws holding down the cover on your mower. on top where all the wires run (you will probably see one burned) There is a screw in the middle holding down the plate, you will need to replace the plate and resplice the wires that may be burned.

Posted on Jun 28, 2009

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